Improvement in chums



v goiter! gratis intent @ffirr.

WILLIAM C. CHAMBERLAIN OF DUBUQUE, IOWA. Letters Patent No. 61,515, dated January) 29, 1867.

IMPROVEMEHT IN UEURNS.

TO ALL WHOM IT MAY CONCERN:

Beit known that I, WILLIAM C. CHAMBERLAIN, of Dubuque, in the county of Dubuque, and State of Iowa, have invented an Improvement in Churn s; and I do hcreby'declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawiugs,making a part of this specification, in whichi Figure 1 is a vertical transverse section through the churn, showing the blades of the dasher, arranged for gathering the better.

Figure 2 is a simiiar view, showing the ash-hladcs arranged for churning.

Figure 3 is a longitudin s-cticn, taken in a vertical plane through the centre of the churn;

Figures 4, 5, and 6 are vicwsof the cornei irons, which are applied to the lower corners of the churn-box. Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to an improvement on that class of churns employing a, tub witha concave bottom,

within which revolves a selfadjusting dasher, which opens during the operation of churning, and closes of itself when the motion of the dashcr is reversed for gathering the butter. The nature of my invention and improve ment consists in having two concave-convex dashers' attached cccentrically to an axis by radial arms, and in hinging segments or portions of said da'shers by their edges to their arms, and staying them by slotted stays, all in such manner that when the dasher shaft is rotated in one direction, the blades will be forced outward by the pressure of cream against them, and when this shaft is rotated in a reverse direction, thedash-blades will be closed by such pressure. The invention also consists in the use of perforated angle-irons, applied to the bottom corners of the churn-box, and adapted to serve as a means for'strcngthenin'g said corners, and also as sockets for holding the legs of the churn, as will he hereinafter described. 7

To enable others skillediu the art to understand my invention, I will describe its construction and operation.

The churn-box A consists of vertical sides and ends and a semicircular bottom. The ends of this box project below the concave bot-tom, and are connected together by horizontal boards, 0 C, which serve as braces of ties for preventing the end boards from spreading out, and also as a square basefor supporting the box in an upright position. At the lower 'cornersof the churn-box four angle-irons are firmly secured, each one of which consists of a perforated socket piece, a, having a fiange, a, projecting perpendicularly from it. These angle-irons are secured firmly to the end pieces ofthe churn-box and cross-pieces O C, so as to serve as stays for this box, and also as sockets for receiving the tenons on the ends of the legs or feet D. To the upper end of the churn-box, stay-irons, El are secured, for preventing the spreading out of the sides of the box, and also serving as handlcsby which to 'lift the churn-box. Concentric to the semicircular bottom of the churnbox, holesare made in theends of this box for receiving the short pins 0 c, which servevas axial bearings for the dasher, as shown in fig. The dasher consists of cross-arms, F F, which are halved together and united at the axis of the dasher. The two shortest arms, F F, have secured to their ends longitudinal pieces, 9 g', and the two arms F F have hinged to them two vibrating concavo-convex blades, h It, which are segments of circles, eccentric to the axis of motion of the dasheiu' When the dasher-crank is turned in the direction indicated by the arrow in fig. 1, the pressure of the liquid in the churn, acting upon the convex surfaces of the blades 71 71, will cause them to assume the position shown in fig: 1. In this position the free bevelled edges of the blades it It will be held snugly against the corresponding edges of the segments g g, and form, in conjunction with these pieces g, two eccentric paddles or blades, for heating and gathering the particles of butter. When the crank of the dasher is turned in the direction indicated by the arrow in fig. 2, for churning, the pressure of the liquid against the concave surfaces of the blades 7!, It will throw their free cndsoutward until arrested by the slotted arms j j and pins 2' 2', in which position the cream flows between the bladesh IL and their segments 9 g, and isact'cd upon with good effect by these parts. The pins enters the'ond of the churn-box, but does not pass through it The pin 0', which has the crank d on itsouter end, passes through the churn-box and entersa socket piece,- s, on the dasher. By raising the forked slide k from the annular groove in the pin 0' this pin can be withdrawn, which will allow the dashcr to be removed from the churn-box. The cover G of the churn-box has two strips, J J, secured to its bottom side, which have their opposite faces grooved in the manner shown in figs-1 and? These strips are parallel to the axis of motion of the dasher, and are designed for directing thelcream which is dashed towards them directly dbwnward. The openings 0 0 which are through the churn-ho cover are for t he purpose of admitting air'to the cream while churning.

Having described my invention, what'I claim as new, and desire to secure by Letters Patent, is

1. The construction of the dasher of a churn of cross-firms F F, having secured to them the pieces 9 g, and hinged to them the blades h h, the latter being attached by their free ends to the arms by means of slotted stajs jj, and pins 2 2', substantially in the manner herein described and for the purposespeeifiecl.

" 2. The socketed angle-irons a a, constructed and applied to the churn-box substantially as described.

3. The eurved and grooved strips J J, applied to the cover G so as to operate as set forth.

W. CfOH'AMBERL'AIN; Witnesses:

E. T. HEALEY, JOHN M. Gen. 

